Update the GUI to be more iApp like

    - In PBGitSidebarView.xib
        - change indentation to 12
        - change font size to 11
        - disable the editable behavior
        - disable autoresizing
        - disable user resizing (column should resize with view)
        - remove the window
        - remove the shared user defaults controller (not being used)
    - add a project item with the project's name
    - a "Stage" item to go to what has been called the commit view
    - new icons for branches, remote branches and tags (created by Nathan Kinsinger)
    - remove the old tiff icons, PBSourceViewRemote.h/m and PBSourceViewAction.h/m from the xcode project
    - uses system icon for folder
    - uses Network icon for remotes
    - capitalize group names
    - rename the Custom group to Other (you can't really customize items in the traditional sense)
    - create a class for each item type that takes care of it's image (instead of trying to guess the image from it or it's parent's name)
    - remove the branch menu toolbar item from the history view, it's redundant now

Author: brotherbard

GitX.xcodeproj/project.pbxproj

@@ -23,6 +23,7 @@
 - (PBGitRef *) ref;
 - (BOOL) hasPathLimiter;
 - (BOOL) hasLeftRight;
+- (NSString *) title;
 
 - (BOOL) isEqualTo: (PBGitRevSpecifier*) other;
 - (BOOL) isAllBranchesRev;